Contact | 中文 | CAS  
   |  Home  |  Research  |  People  |  News  |  Labs  |  Fellowships&Cooperation  |  Education |
Research News
Location:Home > News > Research News
Researchers Unveil the Formation Mechanism of Long-Period Radio Pulsars
2024-05-23| 【A A A【Print】【Close】

Prof. ZHOU Xia from the Xinjiang Astronomical Observatory of the Chinese Academy of Sciences, along with her collaborators, has published a study in the Monthly Notices of the Royal Astronomical Society (MNRAS). The result sheds light on the formation mechanism of long-period radio pulsars.

Radio pulsars are rapidly rotating neutron stars whose electromagnetic radiation can be detected by telescopes on Earth. Prior to 2018, discovered pulsars exhibited rotational periods ranging from milliseconds to a few seconds, while long-period pulsars (with periods greater than 10 seconds) had not been found. With the continuous advancements in observational equipment in recent years, several radio pulsars with rotational periods exceeding 10 seconds have been discovered, posing new challenges to the understanding of pulsar formation and evolution.

The researchers investigated the formation mechanisms of three long-period pulsars (PSRs J0250+5854, J2251-3711, and J0901-4046). They explored the effects of three classical braking mechanisms—magnetic field decay, fallback disks, and r-mode instabilities—on the formation and evolution of long-period radio pulsars.

By comparing model predictions with multi-wavelength observational data, including rotational periods, period derivatives, and upper limits on thermal radiation luminosity, the researchers found that these braking mechanisms could reasonably explain the rotational periods and period derivatives of these pulsars within certain parameter ranges. Although the magnetic field decay model predicted a thermal radiation luminosity exceeding the upper limit for PSR J0901?4046, the predictions for the other two pulsars were within reasonable limits.

This study not only provides new insights into the formation mechanisms of long-period radio pulsars but also emphasizes the importance of future multi-wavelength observations to constrain pulsar theoretical models, key parameters, and the discovery of more long-period pulsars. Such efforts will further unravel the mechanisms of pulsar formation and evolution. 

Contact: ZHOU Xia

Xinjiang Astronomical Observatory, Chinese Academy of Sciences


Article link:

Related News
·Researchers have made progress studying the carbon-rich AGB star IRC+10216 (C...
·Researchers Discover a New Pulsar Possibly Associated with a Supernova Remnant
·Monitoring of Radio Galaxy M87 Confirms Black Hole Spin
·Discovery Plasma Lensing in A Black Widow Pulsar
·Researchers Discovered Annular Distribution of SiC2 towards carbon-rich AGB s...
Related News
·A study on radiation characteristics of Rotating Radio Transients using Parke...
·Researchers certify seven large-amplitude δ Scuti stars
·Researchers investigate dynamic evolution of the clumps partially disrupted f...
·The pulsar discoveries by FAST/CRAFTS: follow-up timing of 24 pulsars
·How energy is released during the flare eruption?
Related News
·High resolution study reveals the radio nature of the magnetic propeller cata...
·Researchers reveal the origin and lensing effect on repeating fast radio burst
·Pulsars with non-stopping pulsed emission
·Researchers found correlations between multiband light curves of PKS 1510-089
·Researchers develop new method for measuring and correcting the pointing erro...
Related News
·Researchers propose new technology to improve the observation sensitivity of QTT
·Study provides deeper insight into artificial intelligence object detection a...
·Changes in spin-down rate and intermittent pulsars
·Researchers simulate the RRAT radio-off fraction
·Researchers carry out H2CO observations of the Perseus molecular cloud using ...
Related News
·Researchers Observe Emission Lines in Planck Cold Cores with Nanshan 26-m Rad...
·The measurement of the magnetic field in the eclipse medium of a spider pulsa...
·Researchers develop oversampled channelization technology for radio astronomy...
·Study highlights impact of C/O ratio on sulfur depletion in TMC-1

Welcome to Xinjiang Astronomical Observatory © 2013
Address: 150 Science 1-Street, Urumqi, Xinjiang 830011, China
Tel: +86-991-3689373 Fax: +86-991-3838628